8 #include <movit/effect_chain.h>
9 #include <movit/ycbcr_input.h>
10 #include <movit/white_balance_effect.h>
11 #include <movit/resample_effect.h>
12 #include <movit/padding_effect.h>
13 #include <movit/overlay_effect.h>
14 #include <movit/resize_effect.h>
15 #include <movit/mix_effect.h>
19 #define WIDTH 1280 // FIXME
20 #define HEIGHT 720 // FIXME
23 using namespace movit;
27 vector<LiveInputWrapper *> live_inputs;
29 template<class T, class... Args>
30 int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
32 // Construct the C++ object and put it on the stack.
33 void *mem = lua_newuserdata(L, sizeof(T));
34 new(mem) T(std::forward<Args>(args)...);
36 // Look up the metatable named <class_name>, and set it on the new object.
37 luaL_getmetatable(L, class_name);
38 lua_setmetatable(L, -2);
43 Theme *get_theme_updata(lua_State* L)
45 luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
46 return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
49 Effect *get_effect(lua_State *L, int idx)
51 if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
52 luaL_testudata(L, idx, "ResampleEffect") ||
53 luaL_testudata(L, idx, "PaddingEffect") ||
54 luaL_testudata(L, idx, "IntegralPaddingEffect") ||
55 luaL_testudata(L, idx, "OverlayEffect") ||
56 luaL_testudata(L, idx, "ResizeEffect") ||
57 luaL_testudata(L, idx, "MixEffect")) {
58 return (Effect *)lua_touserdata(L, idx);
60 luaL_error(L, "Error: Index #%d was not an Effect type\n", idx);
64 bool checkbool(lua_State* L, int idx)
66 luaL_checktype(L, idx, LUA_TBOOLEAN);
67 return lua_toboolean(L, idx);
70 int EffectChain_new(lua_State* L)
72 assert(lua_gettop(L) == 2);
73 int aspect_w = luaL_checknumber(L, 1);
74 int aspect_h = luaL_checknumber(L, 2);
76 return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h);
79 int EffectChain_add_live_input(lua_State* L)
81 assert(lua_gettop(L) == 2);
82 Theme *theme = get_theme_updata(L);
83 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
84 bool override_bounce = checkbool(L, 2);
85 return wrap_lua_object<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, override_bounce);
88 int EffectChain_add_effect(lua_State* L)
90 assert(lua_gettop(L) >= 2);
91 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
93 // TODO: Better error reporting.
94 Effect *effect = get_effect(L, 2);
95 if (lua_gettop(L) == 2) {
96 chain->add_effect(effect);
98 vector<Effect *> inputs;
99 for (int idx = 3; idx <= lua_gettop(L); ++idx) {
100 if (luaL_testudata(L, idx, "LiveInputWrapper")) {
101 LiveInputWrapper *input = (LiveInputWrapper *)lua_touserdata(L, idx);
102 inputs.push_back(input->get_input());
104 inputs.push_back(get_effect(L, idx));
107 chain->add_effect(effect, inputs);
110 lua_settop(L, 2); // Return the effect itself.
112 // Make sure Lua doesn't garbage-collect it away.
113 lua_pushvalue(L, -1);
114 luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
119 int EffectChain_finalize(lua_State* L)
121 assert(lua_gettop(L) == 2);
122 EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
123 bool is_main_chain = checkbool(L, 2);
125 // Add outputs as needed.
126 ImageFormat inout_format;
127 inout_format.color_space = COLORSPACE_sRGB;
128 inout_format.gamma_curve = GAMMA_sRGB;
130 YCbCrFormat output_ycbcr_format;
131 output_ycbcr_format.chroma_subsampling_x = 1;
132 output_ycbcr_format.chroma_subsampling_y = 1;
133 output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
134 output_ycbcr_format.full_range = false;
136 chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR);
137 chain->set_dither_bits(8);
138 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
140 chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
146 int LiveInputWrapper_connect_signal(lua_State* L)
148 assert(lua_gettop(L) == 2);
149 LiveInputWrapper *input = (LiveInputWrapper *)luaL_checkudata(L, 1, "LiveInputWrapper");
150 int signal_num = luaL_checknumber(L, 2);
151 input->connect_signal(signal_num);
155 int WhiteBalanceEffect_new(lua_State* L)
157 assert(lua_gettop(L) == 0);
158 return wrap_lua_object<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
161 int ResampleEffect_new(lua_State* L)
163 assert(lua_gettop(L) == 0);
164 return wrap_lua_object<ResampleEffect>(L, "ResampleEffect");
167 int PaddingEffect_new(lua_State* L)
169 assert(lua_gettop(L) == 0);
170 return wrap_lua_object<PaddingEffect>(L, "PaddingEffect");
173 int IntegralPaddingEffect_new(lua_State* L)
175 assert(lua_gettop(L) == 0);
176 return wrap_lua_object<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
179 int OverlayEffect_new(lua_State* L)
181 assert(lua_gettop(L) == 0);
182 return wrap_lua_object<OverlayEffect>(L, "OverlayEffect");
185 int ResizeEffect_new(lua_State* L)
187 assert(lua_gettop(L) == 0);
188 return wrap_lua_object<ResizeEffect>(L, "ResizeEffect");
191 int MixEffect_new(lua_State* L)
193 assert(lua_gettop(L) == 0);
194 return wrap_lua_object<MixEffect>(L, "MixEffect");
197 int Effect_set_float(lua_State *L)
199 assert(lua_gettop(L) == 3);
200 Effect *effect = (Effect *)get_effect(L, 1);
202 const char* cstr = lua_tolstring(L, 2, &len);
203 std::string key(cstr, len);
204 float value = luaL_checknumber(L, 3);
205 if (!effect->set_float(key, value)) {
206 luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", cstr, int(value));
211 int Effect_set_int(lua_State *L)
213 assert(lua_gettop(L) == 3);
214 Effect *effect = (Effect *)get_effect(L, 1);
216 const char* cstr = lua_tolstring(L, 2, &len);
217 std::string key(cstr, len);
218 float value = luaL_checknumber(L, 3);
219 if (!effect->set_int(key, value)) {
220 luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", cstr, int(value));
225 int Effect_set_vec4(lua_State *L)
227 assert(lua_gettop(L) == 6);
228 Effect *effect = (Effect *)get_effect(L, 1);
230 const char* cstr = lua_tolstring(L, 2, &len);
231 std::string key(cstr, len);
233 v[0] = luaL_checknumber(L, 3);
234 v[1] = luaL_checknumber(L, 4);
235 v[2] = luaL_checknumber(L, 5);
236 v[3] = luaL_checknumber(L, 6);
237 if (!effect->set_vec4(key, v)) {
238 luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", cstr,
239 v[0], v[1], v[2], v[3]);
244 const luaL_Reg EffectChain_funcs[] = {
245 { "new", EffectChain_new },
246 { "add_live_input", EffectChain_add_live_input },
247 { "add_effect", EffectChain_add_effect },
248 { "finalize", EffectChain_finalize },
252 const luaL_Reg LiveInputWrapper_funcs[] = {
253 { "connect_signal", LiveInputWrapper_connect_signal },
257 const luaL_Reg WhiteBalanceEffect_funcs[] = {
258 { "new", WhiteBalanceEffect_new },
259 { "set_float", Effect_set_float },
260 { "set_int", Effect_set_int },
261 { "set_vec4", Effect_set_vec4 },
265 const luaL_Reg ResampleEffect_funcs[] = {
266 { "new", ResampleEffect_new },
267 { "set_float", Effect_set_float },
268 { "set_int", Effect_set_int },
269 { "set_vec4", Effect_set_vec4 },
273 const luaL_Reg PaddingEffect_funcs[] = {
274 { "new", PaddingEffect_new },
275 { "set_float", Effect_set_float },
276 { "set_int", Effect_set_int },
277 { "set_vec4", Effect_set_vec4 },
281 const luaL_Reg IntegralPaddingEffect_funcs[] = {
282 { "new", IntegralPaddingEffect_new },
283 { "set_float", Effect_set_float },
284 { "set_int", Effect_set_int },
285 { "set_vec4", Effect_set_vec4 },
289 const luaL_Reg OverlayEffect_funcs[] = {
290 { "new", OverlayEffect_new },
291 { "set_float", Effect_set_float },
292 { "set_int", Effect_set_int },
293 { "set_vec4", Effect_set_vec4 },
297 const luaL_Reg ResizeEffect_funcs[] = {
298 { "new", ResizeEffect_new },
299 { "set_float", Effect_set_float },
300 { "set_int", Effect_set_int },
301 { "set_vec4", Effect_set_vec4 },
305 const luaL_Reg MixEffect_funcs[] = {
306 { "new", MixEffect_new },
307 { "set_float", Effect_set_float },
308 { "set_int", Effect_set_int },
309 { "set_vec4", Effect_set_vec4 },
315 LiveInputWrapper::LiveInputWrapper(Theme *theme, EffectChain *chain, bool override_bounce)
318 ImageFormat inout_format;
319 inout_format.color_space = COLORSPACE_sRGB;
320 inout_format.gamma_curve = GAMMA_sRGB;
322 YCbCrFormat input_ycbcr_format;
323 input_ycbcr_format.chroma_subsampling_x = 2;
324 input_ycbcr_format.chroma_subsampling_y = 1;
325 input_ycbcr_format.cb_x_position = 0.0;
326 input_ycbcr_format.cr_x_position = 0.0;
327 input_ycbcr_format.cb_y_position = 0.5;
328 input_ycbcr_format.cr_y_position = 0.5;
329 input_ycbcr_format.luma_coefficients = YCBCR_REC_601;
330 input_ycbcr_format.full_range = false;
332 if (override_bounce) {
333 input = new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, WIDTH, HEIGHT, YCBCR_INPUT_SPLIT_Y_AND_CBCR);
335 input = new YCbCrInput(inout_format, input_ycbcr_format, WIDTH, HEIGHT, YCBCR_INPUT_SPLIT_Y_AND_CBCR);
337 chain->add_input(input);
340 void LiveInputWrapper::connect_signal(int signal_num)
342 theme->connect_signal(input, signal_num);
345 Theme::Theme(const char *filename, ResourcePool *resource_pool)
346 : resource_pool(resource_pool)
351 register_class("EffectChain", EffectChain_funcs);
352 register_class("LiveInputWrapper", LiveInputWrapper_funcs);
353 register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
354 register_class("ResampleEffect", ResampleEffect_funcs);
355 register_class("PaddingEffect", PaddingEffect_funcs);
356 register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
357 register_class("OverlayEffect", OverlayEffect_funcs);
358 register_class("ResizeEffect", ResizeEffect_funcs);
359 register_class("MixEffect", MixEffect_funcs);
363 if (luaL_dofile(L, filename)) {
364 fprintf(stderr, "error: %s\n", lua_tostring(L, -1));
368 assert(lua_gettop(L) == 0);
370 // Ask it for the number of channels.
371 lua_getglobal(L, "num_channels");
373 if (lua_pcall(L, 0, 1, 0) != 0) {
374 fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
378 num_channels = luaL_checknumber(L, 1);
381 void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
383 luaL_newmetatable(L, class_name);
384 lua_pushlightuserdata(L, this);
385 luaL_setfuncs(L, funcs, 1);
386 lua_pushvalue(L, -1);
387 lua_setfield(L, -2, "__index");
388 lua_setglobal(L, class_name);
391 pair<EffectChain *, function<void()>>
392 Theme::get_chain(unsigned num, float t, unsigned width, unsigned height)
394 unique_lock<mutex> lock(m);
395 lua_getglobal(L, "get_chain"); /* function to be called */
396 lua_pushnumber(L, num);
397 lua_pushnumber(L, t);
398 lua_pushnumber(L, width);
399 lua_pushnumber(L, height);
401 if (lua_pcall(L, 4, 2, 0) != 0) {
402 fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
406 EffectChain *chain = (EffectChain *)luaL_checkudata(L, -2, "EffectChain");
407 if (!lua_isfunction(L, -1)) {
408 fprintf(stderr, "Argument #-1 should be a function\n");
411 lua_pushvalue(L, -1);
412 int funcref = luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak!
414 return make_pair(chain, [this, funcref]{
415 unique_lock<mutex> lock(m);
417 // Set up state, including connecting signals.
418 lua_rawgeti(L, LUA_REGISTRYINDEX, funcref);
419 if (lua_pcall(L, 0, 0, 0) != 0) {
420 fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
426 std::vector<std::string> Theme::get_transition_names(float t)
428 unique_lock<mutex> lock(m);
429 lua_getglobal(L, "get_transitions");
430 lua_pushnumber(L, t);
431 if (lua_pcall(L, 1, 1, 0) != 0) {
432 fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
436 std::vector<std::string> ret;
438 while (lua_next(L, -2) != 0) {
439 ret.push_back(lua_tostring(L, -1));
445 void Theme::connect_signal(YCbCrInput *input, int signal_num)
447 input->set_texture_num(0, input_textures[signal_num].tex_y);
448 input->set_texture_num(1, input_textures[signal_num].tex_cbcr);
451 void Theme::transition_clicked(int transition_num, float t)
453 unique_lock<mutex> lock(m);
454 lua_getglobal(L, "transition_clicked");
455 lua_pushnumber(L, transition_num);
456 lua_pushnumber(L, t);
458 if (lua_pcall(L, 2, 0, 0) != 0) {
459 fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
464 void Theme::channel_clicked(int preview_num)
466 unique_lock<mutex> lock(m);
467 lua_getglobal(L, "channel_clicked");
468 lua_pushnumber(L, preview_num);
470 if (lua_pcall(L, 1, 0, 0) != 0) {
471 fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));